If the residents of Madrid and Barcelona, Spain, seem a little bit high, that's probably not because they're high on life. Instead, it may just be because of the cocaine and LSD found in the air. Yes, you read that right:

A new study has found the air in Madrid and Barcelona is also laced with at least five drugs - most prominently cocaine.

The Superior Council of Scientific Investigations, a government institute, said on its website that in addition to cocaine, it found trace amounts of amphetamines, opiates, cannabinoids and lysergic acid -a relative of LSD - in air-quality control stations in the cities.

But authorities say that the amount is so miniscule that there's no reason for alarm: Link (Photo: cuellar [Flickr])